I'm not a fan of Creative, but frankly, this is not a 'lack of any continuity'. Gargano is extremely reluctantly* on the same page as Ciampa. Ciampa has been sweet talking his former partner, telling him how fucking awesome it is to be a heel and how that's how they can finally rule over NXT like they'd always talked about. After crushing Ricochet's head and finally claiming his first NXT singles title, Gargano is clearly thinking, "oh shit, maybe he's right."
Gargano is nowhere near ready to accept Ciampa back as a friend, and with good reason. They were working together on Raw because: a) they were forced to, b) because they are both trying to make it in the big leagues, and c)"fuck the Revival" (with whom they have a *very* extensive history). Gargano and Ciampa worked as a team because, ultimately, that's what they were great at and it's like riding a bike after an accident. Even if it's uncomfortable, you used to it again.
After the match Gargano looked miserable, and actively shrugs off Ciampa's pats on the back. Showing he still does not like Ciampa, but may be resigned to the realization that this is his way to his first main roster gold.
There are times when, yeah, they expect you to have the memory of a parakeet. This isn't one of them.